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DOI:10.2214/AJR.04.1688
AJR 2006; 186:1125-1132
© American Roentgen Ray Society

Pictorial Essay

Radiologic Findings of Peripheral Primitive Neuroectodermal Tumor Arising in the Retroperitoneum

Mi Sung Kim1, Bohyun Kim2, Chan Sup Park1, Soon Young Song1, Eun Ja Lee1, Noh Hyuck Park1, Hye-Seong Kim2, Seung Hyup Kim3 and Kyoung Sik Cho4

1 Department of Radiology, Myongji Hospital, Kwandong University College of Medicine, 697-24 Hwajung-dong, Duckyang-gu, Koyang, Kyunggi 412-270, South Korea.
2 Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-dong, Kangnam-ku, Seoul 135-710, South Korea.
3 Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, 28 Yongon-dong, Chongno-gu, Seoul 110-744, South Korea.
4 Department of Diagnostic Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Poongnap-dong, Songpa-gu, Seoul 138-736, South Korea.

OBJECTIVE. The purpose of this article is to present the radiological findings of peripheral primitive neuroectodermal tumors that arise in the retroperitoneum.

CONCLUSION. Peripheral primitive neuroectodermal tumors (PNETs) arising in the retroperitoneum tend to be large and aggressive. Although the imaging appearance of peripheral PNETs is nonspecific, these tumors should be considered in the differential diagnosis when one encounters a large retroperitoneal mass with aggressive features.

Keywords: CT imaging • genitourinary tract imaging • MRI


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